// JScript File

    function ltrim (s)
        {
            return s.replace( /^\s*/, "" );
        }
        function validate()
        {
            var username=document.getElementById("txtusername");
            var pwd=document.getElementById("txtpwd");
            if (ltrim(username.value)=="")
            { alert("Please enter username"); username.value=""; username.focus(); return false; }
            
            if (ltrim(pwd.value)=="")
            { alert("Please enter password"); pwd.value=""; pwd.focus(); return false; }
            
            return true;
        }
        function keydownhandler(event)
        {
        if(event && event.which) 
        {
            var e=event;
            var charCode=e.which;
        } 
        else 
        {
            var e=window.event;
            var charCode=e.keyCode;
        }
        // process only the Enter key
        if (charCode == 13)
        { 
            // cancel the default submit
            e.returnValue=false;
            e.cancel = true;        
            // submit the form by programmatically clicking the specified button
            var btn = document.getElementById("btnlogin");
            // finding the browser, and changing action according to that
            if (navigator.appName.indexOf("Microsoft Internet Explorer")>(-1))                
                btn.click();        
            else        
                btn.focus();
        }
        }